Switch from happo to bitrise git branch (#1099)

diff --git a/LottieSample/build.gradle b/LottieSample/build.gradle
index bc812ea..73e83bf 100644
--- a/LottieSample/build.gradle
+++ b/LottieSample/build.gradle
@@ -21,7 +21,7 @@
     buildConfigField("String", "S3SecretKey", "\"" + System.getenv("LOTTIE_S3_SECRET_KEY") + "\"")
     buildConfigField("String", "HappoApiKey", "\"" + System.getenv("LOTTIE_HAPPO_API_KEY") + "\"")
     buildConfigField("String", "HappoSecretKey", "\"" + System.getenv("LOTTIE_HAPPO_SECRET_KEY") + "\"")
-    buildConfigField("String", "TRAVIS_GIT_BRANCH", "\"" + System.getenv("TRAVIS_GIT_BRANCH") + "\"")
+    buildConfigField("String", "BITRISE_GIT_BRANCH", "\"" + System.getenv("BITRISE_GIT_BRANCH") + "\"")
     buildConfigField("String", "GIT_SHA", "\"" + gitSha + "\"")
     buildConfigField("String", "GIT_BRANCH", "\"" + gitBranch + "\"")
   }
diff --git a/LottieSample/src/androidTest/java/com/airbnb/lottie/HappoSnapshotter.kt b/LottieSample/src/androidTest/java/com/airbnb/lottie/HappoSnapshotter.kt
index 669c838..326c114 100644
--- a/LottieSample/src/androidTest/java/com/airbnb/lottie/HappoSnapshotter.kt
+++ b/LottieSample/src/androidTest/java/com/airbnb/lottie/HappoSnapshotter.kt
@@ -49,7 +49,7 @@
     private val bucket = "lottie-happo"
     private val happoApiKey = BC.HappoApiKey
     private val happoSecretKey = BC.HappoSecretKey
-    private val gitBranch = URLEncoder.encode((if (BC.TRAVIS_GIT_BRANCH == "null") BC.GIT_BRANCH else BC.TRAVIS_GIT_BRANCH).replace("/", "_"), "UTF-8")
+    private val gitBranch = URLEncoder.encode((if (BC.BITRISE_GIT_BRANCH == "null") BC.GIT_BRANCH else BC.BITRISE_GIT_BRANCH).replace("/", "_"), "UTF-8")
     private val androidVersion = "android${Build.VERSION.SDK_INT}"
     private val reportNames = listOfNotNull(
             "${BC.GIT_SHA}-$androidVersion",